CN1381303A - Mixer of emulsifier with hard bearing - Google Patents
Mixer of emulsifier with hard bearing Download PDFInfo
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- CN1381303A CN1381303A CN 01112666 CN01112666A CN1381303A CN 1381303 A CN1381303 A CN 1381303A CN 01112666 CN01112666 CN 01112666 CN 01112666 A CN01112666 A CN 01112666A CN 1381303 A CN1381303 A CN 1381303A
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- bearing
- rotating shaft
- axle journal
- slotted eye
- hardness
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Abstract
A hard bearing for the stirring head of emulsifier is composed of bearing seat and slide bearing consisting of rotary shaft and bearing. On the side surface of the said bearing, there are more than one axial slots. On the bearing seat, there are obique slots communicated between the said slots on bearing and the working medium for making the material on the inner surface of bearing and in its gap come in the working medium, preventing blocking and increasing lubricating and buffering actions.
Description
The present invention relates to stir and emulsifying device the stirring-head on particularly a kind of hard bearing emulsifier that is used for food, chemical industry.
Mixingemulsificationmachine is made up of frame and stirring-head two large divisions, and wherein the stirring-head part is made up of the rotor and the stator of high speed rotating.Under the driving of motor, the high speed rotor rotated sucks region trochanterica with material from container bottom, and bears strong immixture, and material throws away from stator hole after being forced through the gap of the stator of precision-fit and rotor.Stirring-head bears the shear action of violent machinery and fluid power, and particle is torn and pulverized, and meanwhile, new material is sucked into rotor center, finishes a circulation thus.
The present stirring-head that uses, its rotating shaft and bearing adopt the structure and material of sliding bearing basically, bearing arrangement is a side continuous hollow cylinder, is made by wear-resisting lubricating type material such as polytetrafluoroethylene (PTFE) or bronze, and rotating shaft is then made by corrosion resistant stainless steel material such as 1Cr18Ni9Ti material.
In existing stirring-head structure, the side of bearing arrangement all is successional, though have groove on the axle bush of the sliding bearing that some on-liquid is worked down, in order to storage lubricating oil, but this kind groove does not destroy the continuity of bearing side, be that groove does not penetrate the bearing side, this kind structure is useless to the stirring-head of working under liquid, because stirring-head can not contain lubricating oil.
The rotating shaft axle journal of present used stirring-head does not all adopt Hardmetal materials, more on the contrary the bearing of the sliding bearing under the on-liquid working environment adopts this kind hard material, the nitriding of rotating shaft axle journal reaches Rockwell hardness HRC60 to improve hardness, but needs the sufficient lubrication of lubricating oil effectively to work.Press the General Principle of sliding bearing, the rotating shaft axle journal should not adopt Hardmetal materials, Ni-based or the cobalt base hard alloy material that particularly contains tungsten carbide particle, because though this kind material is harmless to self, but but bearing is played the effect of accelerated wear test, if weaken this wearing and tearing, then can damage rotating shaft and quicken the fatigue fracture of rotating shaft with the hardness that improves bearing.But in fact, the bearing working state of the stirring-head of working under liquid exists following multiple situation:
1, bearing radial load is zero, and the force of sliding friction of rotating shaft axle journal and bearing is very little;
2, the rotating shaft rotating speed is very high, when rotating speed reaches 3000 rev/mins, because beating of rotating shaft causes that the frequent bump and the friction of axle journal and bearing, frequency can reach tens thousand of times/minutes;
3, there is the gap between rotating shaft axle journal and the bearing, is full of working media (material) in the gap.
When the rotating shaft axle journal in the stirring-head is also made by the higher metal material of hardness by Hardmetal materials, bearing, exist the gap of 25 μ m～200 μ m between rotating shaft of stirrer axle journal and the bearing, the working media terminal point raw meal particle size of agitator then is 0.5 μ m～20 μ m, has therefore accumulated a large amount of materials in the crack during this time.Material in this gap is subjected to the effect that rotating shaft is rotated at a high speed and pushed, when rotating shaft rotating speed during up to 3000 rev/mins, linear velocity reaches 3 meter per second clocks, thrown away the gap away from the feed liquid part at two ends up and down from two ends up and down in this gap, remaining solid material is then dried under febrile state, and sticks on the bearing after being squeezed, in the course of time, this gap is filled up by material, and rotating shaft is killed, and causes burn-down of electric motor.
Speak of above, the bearing of existing stirring-head generally adopts polytetrafluoroethylene (PTFE) or bronze material manufacturing, and the higher material manufacturing of hardness is adopted in rotating shaft, as the 1Cr18Ni9Ti material.The radial load of the sliding bearing of stirring-head is zero or very little, but because there is circular runout in machine shaft, under rotating at a high speed, add and be full of the working media material that granularity is 0.5 μ m～200 μ m between rotating shaft axle journal and the bearing, the similar abrasive material that has been full of, the collision between rotating shaft axle journal and the bearing reaches tens thousand of times with the friction per minute, moreover, the hardness of rotating shaft axle journal and bearing is too low again, so both service life is very short.If rotating shaft axle journal and bearing all adopt the high hardness material manufacturing, axle journal and bearing can for want of lubricate and cushion medium and be subjected to sharp wear.
At the existing shortcoming of above-mentioned stirring-head, the stirring-head that the purpose of this invention is to provide a kind of improved hard bearing emulsifier, its rotating shaft axle journal and bearing adopt hard material, and existing lubrication can obtain buffering again, have solved a difficult problem that causes rotating shaft to be killed by the material obstruction.
Technical solution of the present invention is as follows:
A kind of stirring-head of hard bearing emulsifier, it comprises sliding bearing and the bearing block of being made up of rotating shaft and bearing, bearing block is fixed by support bar, bearing block is connected with stator by holding screw, rotor is set in stator, plug knife is housed on the rotor, and the side of described bearing is provided with one or more slotted eye along axis direction; Described bearing block is provided with wherein, and an end communicates with the bearing slotted eye, the slotted eye of the oblique setting that communicates with working media of the other end wherein, crossing the bearing block slotted eye attached to the material in bearing inner wall and the gap by the bearing groove aperture is input in the working media, working media also enters into the gap through slotted eye and replenishes the working media that loses simultaneously, to increase lubricated and cushioning effect; Described rotating shaft is by the resistant material manufacturing, the axle journal of rotating shaft adopts corrosion-resisting hard-alloy material to strengthen, described bearing is made by corrosion-resistant high rigidity metal material, and bearing material hardness is greater than Rockwell hardness HRC30, and bearing material hardness is 0.3～1 with the ratio of rotating shaft axle journal material hardness.
Stirring-head of the present invention adopts new structural design, the material clogging can not take place, and rotating shaft can not killed yet, and can play lubrication between rotating shaft axle journal and the bearing and produce buffering effect.The rotating shaft axle journal adopts corrosion-resisting hard-alloy material to strengthen, and bearing is then made by corrosion-resistant high rigidity metal material, has improved wearability thus, has prolonged service life.Adopt stirring-head of the present invention can prevent phenomenons such as rotating shaft is killed, burn-down of electric motor effectively.
Below in conjunction with accompanying drawing the utility model is elaborated.
Fig. 1 is a kind of stirring-head structural representation of hard bearing emulsifier.
Fig. 2 is the bearing vertical view in Fig. 1 stirring-head.
Fig. 3 is the bearing block structure schematic diagram in Fig. 1 stirring-head.
Fig. 4 is by upward view shown in Figure 3.
Referring to Fig. 1 to Fig. 4, a kind of stirring-head of hard bearing emulsifier comprises sliding bearing and bearing block 1.Sliding bearing is made up of rotating shaft 2 and bearing 3.Bearing block 1 is fixing by support bar 4, and bearing block 1 is connected with stator 6 by holding screw 5.Rotor 7 is set in stator 6, and rotor 7 is fixing by holding screw 12, and plug knife 8 is housed on the rotor 7.
The side of bearing 3 is provided with one or more slotted eye 9 along axis direction.Bearing slotted eye 9 can be arranged to two or three elongate slot.Bearing block 1 is provided with the slotted eye 10 of oblique setting, and a wherein end of this tilting slotted eye 10 communicates with bearing slotted eye 9, and wherein the other end communicates with working media.Be input in the working media through bearing block slotted eye 10 by bearing slotted eye 9 attached to the material in bearing 3 inwalls and the gap, simultaneously, new working media also enters into the gap through slotted eye and replenishes the working media that loses, to increase lubricated and cushioning effect.
Bearing 3 is fixed in the dead eye 11 of bearing block 1, when the rotating shaft 2 of being passed by dead eye 11 when driven by motor is rotated at a high speed, rotor 7 and plug knife 8 be rotation at a high speed thereupon, material is forced through the gap between plug knife 8 and the stator 6, and bearing violent machinery and fluid power shear action, throw away the stator hole 13 of material from stator 6.
Stirring-head rotating shaft 2 of the present invention is by the resistant material manufacturing, and the axle journal of rotating shaft 2 adopts corrosion-resisting hard-alloy material to strengthen, and the surface-coated of rotating shaft 2 axle journals has nickel-based self-fluxing alloy layer or cobalt base self-fluxing alloy layer.Bearing 3 is made by corrosion-resistant high rigidity metal material, and bearing 3 inner surface thermal sprayings have nickel-based self-fluxing alloy layer or cobalt base self-fluxing alloy layer.Rotating shaft 2 axle journal material hardnesses are than bearing 3 material hardness height, and bearing material hardness is greater than Rockwell hardness HRC30, and bearing 3 material hardnesses are 0.3～1 with the ratio of rotating shaft 2 axle journal material hardnesses, and the best is 0.65～0.75.
For example: rotating shaft is made with 1Cr18Ni9Ti, the Ni-based self-dissolving alloy-layer of axle journal thermal spraying, and bearing is made with the high silicon corrosion resistant material of STSi15Mo3R.Through being machined to required size and fineness requirement, record axle journal HRC64, bearing HRC48.The wear rate of its bearing and axle journal sees Table 2 sequence number 7.
Again for example; Rotating shaft is made with 1Cr18Ni9Ti, the Ni-based self-dissolving alloy-layer of axle journal thermal spraying, and bearing is made with high silicon corrosion resistant material, and the Ni-based self-dissolving alloy-layer of bearing inner surface thermal spraying is as axle bush.Through being machined to required size and fineness requirement, record axle journal HRC64, bearing HRC48.The wear rate of its bearing and axle journal sees Table 2 sequence number 7.
The present invention is when work, the driven by motor rotating shaft is rotated at a high speed, working media in rotating shaft axle journal and the bearing clearance is rotation at a high speed thereupon, because action of centrifugal force, working media throws away from slotted eye, working media in the slotted eye is rolled in the gap by the rotating shaft axle journal simultaneously, and the working media amount that throws away equates that with the working media amount that is involved in the working media in the gap reaches dynamic equilibrium thus.At this moment, under the washing away of high speed torrent, also come off and take out of, be input in the working media, reduced possibility of jamming thus through the bearing block slotted eye attached to the material on the bearing inner wall.Owing to be full of the working media of bringing in constant renewal in the gap, working media between rotating shaft axle journal and bearing just becomes a kind of actual lubricant and buffer like this, make the rotating shaft axle journal greatly reduce, thereby prolonged the service life of bearing and rotating shaft the wearing and tearing of bearing.
Because material enters the gap between rotating shaft axle journal and the bearing and enters the bearing groove hole, material is when playing lubricated and cushioning effect, increased abrasive action as abrasive material, particularly when containing undissolved solid matter (as sodium chloride particle) in the material, the hardness of rotating shaft axle journal and bearing then can reach effect preferably greater than the hardness of material.Bearing hardness is that 30%～100% of rotating shaft axle journal hardness all can.According to the viscosity of working media, its viscosity is high more, the also corresponding raising of hardness.For example bearing adopts the 7Cr17 stainless steel material, and hardness is HRC54.
The stirring-head rotating shaft can be adopted the manufacturing of 1Cr18Ni9Ti material, the rotating shaft necked part is thermal spraying or surfacing nickel-based self-fluxing alloy layer after lathe roughing, behind corase grind, correct grinding, meet dimensional requirement, the hardness of measuring this hard alloy layer is HRC60 (HV713), and the hard alloy layer average thickness is 0.28mm.
The present invention tabulates and has contrasted the abrasion condition of bearing and rotating shaft axle journal, and table 1 is listed the bearing of prior art and the wear rate of rotating shaft axle journal, and the rotating shaft material of employing is 1Cr18Ni9Ti; Table 2 is listed the wear rate of bearing of the present invention and rotating shaft axle journal, and the rotating shaft axle journal adopts hot surfacing nickel-based self-fluxing alloy layer, and hardness is HRC64.By the table in as seen, bearing hardness of the present invention is HRC48, its wear rate is 0.74 μ m/ hour, only be the used bronze material ZCuSn5Pb5Zn5 wear rate 2.78 μ m/ of prior art hours about 1/4, the wear rate of rotating shaft axle journal is 0.21 μ m/ hour, only be prior art 0.69 μ m/ hour 1/3.
The experiment condition of above numerical value is: 40% sodium-chloride water solution is working media (containing solid sodium chloride), and the rotating shaft rotating speed is 3500 rev/mins, turns round after 100 hours, with vernier caliper measurement bearing bore diameter and axle journal external diameter, per hour draws the mean value of wear rate.
Realize that best way of the present invention is to improve the hardness of rotating shaft axle journal and bearing respectively, after the hardness of axle journal was determined, an optimal hardness value of seeking bearing just can not produce a maximum of obvious frictionally damage to axle journal.The hardness of rotating shaft axle journal is reached more than the HRC60 (HV713), HRC65 for example, bearing hardness is 0.65～0.75 o'clock with the ratio of rotating shaft axle journal hardness, hardness is HRC40～HRC50, is the optimal hardness value.If when being lower than hardness HRC40, then bearing does not reach maximum service life (MSL); If when surpassing hardness HRC50, the rotating shaft journal wear will aggravate.
Table 1:
| Bearing material | Bearing wear rate (μ m/ hour) | Rotating shaft journal wear rate (μ m/ hour) |
| Polytetrafluoroethylene | ????2.08 | ????0.43 |
| ??ZCuSn5Pb5Zn5 | ????2.78 | ????0.69 |
Table 2:
| Sequence number | Bearing material | Hardness | Bearing wear rate (μ m/ hour) | Journal wear rate (μ m/ hour) |
| ????1 | Polytetrafluoroethylene | ????3.01 | ????0.09 | |
| ????2 | ????ZCuSn5Pb5Zn5 | ????2.3 | ????0.1 | |
| ????3 | ????1Cr18Ni9Ti | HB187 | ????1.71 | ????0.11 |
| ????4 | 7Cr17 (annealing) | HRC26 | ????1.2 | ????0.12 |
| ????5 | ????00Cr18Ni5Mo3Si2 | HRC30 | ????0.97 | ????0.13 |
| ????6 | ????STSi11Cu2CrR | HRC42 | ????0.77 | ????0.2 |
| ????7 | ????STSi15Mo3R | HRC48 | ????0.74 | ????0.21 |
| ????8 | 7Cr17 (quenching) | HRC54 | ????0.7 | ????0.38 |
| ????9 | 11Cr17 (quenching) | HRC58 | ????0.66 | ????0.49 |
| ????10 | The thermal spraying nickel-base alloy | HRC65 | ????0.53 | ????0.53 |
Claims (4)
1. the stirring-head of a hard bearing emulsifier, it comprises sliding bearing and the bearing block of being made up of rotating shaft and bearing, bearing block is fixed by support bar, bearing block is connected with stator by holding screw, rotor is set in stator, plug knife is housed on the rotor, it is characterized in that, the side of described bearing is provided with one or more slotted eye along axis direction; Described bearing block is provided with wherein, and an end communicates with the bearing slotted eye, the slotted eye of the oblique setting that communicates with working media of the other end wherein, crossing the bearing block slotted eye attached to the material in bearing inner wall and the gap by the bearing groove aperture is input in the working media, working media also enters into the gap through slotted eye and replenishes the working media that loses simultaneously, to increase lubricated and cushioning effect; Described rotating shaft is by the resistant material manufacturing, the axle journal of rotating shaft adopts corrosion-resisting hard-alloy material to strengthen, described bearing is made by corrosion-resistant high rigidity metal material, and bearing material hardness is greater than Rockwell hardness HRC30, and bearing material hardness is 0.3～1 with the ratio of rotating shaft axle journal material hardness.
2. the stirring-head of hard bearing emulsifier according to claim 1 is characterized in that, described bearing slotted eye is arranged to two or three elongate slot.
3. the stirring-head of hard bearing emulsifier according to claim 1 is characterized in that, the surface-coated of described rotating shaft axle journal has nickel-based self-fluxing alloy layer or cobalt base self-fluxing alloy layer.
4. the stirring-head of hard bearing emulsifier according to claim 1 is characterized in that, described bearing material hardness is 0.65～0.75 with the ratio of rotating shaft axle journal material hardness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01112666 CN1204962C (en) | 2001-04-18 | 2001-04-18 | Mixer of emulsifier with hard bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01112666 CN1204962C (en) | 2001-04-18 | 2001-04-18 | Mixer of emulsifier with hard bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1381303A true CN1381303A (en) | 2002-11-27 |
| CN1204962C CN1204962C (en) | 2005-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01112666 Expired - Fee Related CN1204962C (en) | 2001-04-18 | 2001-04-18 | Mixer of emulsifier with hard bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1204962C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107519778A (en) * | 2016-06-20 | 2017-12-29 | 上海弗鲁克科技发展有限公司 | Sterile level lipstick equipment |
-
2001
- 2001-04-18 CN CN 01112666 patent/CN1204962C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107519778A (en) * | 2016-06-20 | 2017-12-29 | 上海弗鲁克科技发展有限公司 | Sterile level lipstick equipment |
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| Publication number | Publication date |
|---|---|
| CN1204962C (en) | 2005-06-08 |
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